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Musya8 [376]
3 years ago
5

What are sessile algae?

Biology
1 answer:
Vedmedyk [2.9K]3 years ago
3 0
A holdfast is a root-like structure that anchors aquatic sessile organisms, such as seaweed, other sessile algae, stalked crinoids, benthic cnidarians, and sponges, to the substrate.
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which statement is a hypothesis? A)If the temperature increases, then crickets will chirp more. B)crickets are cooler than grass
Leto [7]

Answer:

C) Does the temperature affect how much crickets chirp

Explanation:

A hypothesis is a question that you test through study and experimentation. Basically a hypothesis is an educated guess that you attempt to prove write(it could be wrong) through an experiment

5 0
3 years ago
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Which of the following mechanisms is used by gram-negative bacteria to cross the blood-brain barrier?
NISA [10]

Answer:

Which of the following mechanisms is used by gram-negative bacteria to cross the blood-brain barrier? D) Inducing TNF

Explanation:

The blood brain barrier is a barrier formed by brain microvascular endothelial cells, astrocytes and pericytes. Pathogens can cross this barrier by using different mechanisms. The Tumor Necrosis Factor (TNF) is the way gram-negative bacteria cross this mentioned blood-brain barrier.

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3 years ago
How does predation affect population cycles
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3 years ago
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Leya [2.2K]
Newton's First law of motion:  An object at rest stays at rest and an object in motion stays in motion unless acted upon by an unbalanced force.
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3 years ago
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Why does protein concentration increase from the arterial blood to the postglomerular blood
siniylev [52]
<span>Proteins have a very high molecular weight and cannot be present as macro molecules in the glomerular blood. Before even reaching the blood, they are well masticated and processed to simple amino acids and other nitrogenous compounds like urea, uric acid etc. (in the digestive system itself). They are eliminated from the body while glomerular filtration through urine. The glomerular blood thus becomes free from such compounds before leaving the kidney.</span>
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